/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-16 01:11:08,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-16 01:11:08,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-16 01:11:08,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-16 01:11:08,920 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-16 01:11:08,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-16 01:11:08,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-16 01:11:08,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-16 01:11:08,926 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-16 01:11:08,927 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-16 01:11:08,928 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-16 01:11:08,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-16 01:11:08,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-16 01:11:08,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-16 01:11:08,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-16 01:11:08,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-16 01:11:08,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-16 01:11:08,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-16 01:11:08,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-16 01:11:08,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-16 01:11:08,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-16 01:11:08,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-16 01:11:08,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-16 01:11:08,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-16 01:11:08,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-16 01:11:08,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-16 01:11:08,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-16 01:11:08,950 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-16 01:11:08,951 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-16 01:11:08,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-16 01:11:08,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-16 01:11:08,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-16 01:11:08,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-16 01:11:08,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-16 01:11:08,956 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-16 01:11:08,956 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-16 01:11:08,957 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-16 01:11:08,958 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-16 01:11:08,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-16 01:11:08,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-16 01:11:08,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-16 01:11:08,965 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-16 01:11:08,992 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-16 01:11:08,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-16 01:11:08,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-16 01:11:08,994 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-16 01:11:08,994 INFO L138 SettingsManager]: * Use SBE=true [2020-09-16 01:11:08,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-16 01:11:08,994 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-16 01:11:08,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-16 01:11:08,995 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-16 01:11:08,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-16 01:11:08,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-16 01:11:08,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-16 01:11:08,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-16 01:11:08,996 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-16 01:11:08,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-16 01:11:08,996 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-16 01:11:08,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-16 01:11:08,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-16 01:11:08,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-16 01:11:08,997 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-16 01:11:08,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-16 01:11:08,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 01:11:08,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-16 01:11:08,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-16 01:11:08,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-16 01:11:08,999 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-16 01:11:08,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-16 01:11:08,999 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-16 01:11:08,999 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-16 01:11:08,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-16 01:11:09,000 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-16 01:11:09,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-16 01:11:09,551 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-16 01:11:09,556 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-16 01:11:09,558 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-16 01:11:09,559 INFO L275 PluginConnector]: CDTParser initialized [2020-09-16 01:11:09,561 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc.i [2020-09-16 01:11:09,660 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97b7c2f5b/598afa83bd9642cd9e9a58bb0a1d6726/FLAG56e722581 [2020-09-16 01:11:10,339 INFO L306 CDTParser]: Found 1 translation units. [2020-09-16 01:11:10,340 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc.i [2020-09-16 01:11:10,361 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97b7c2f5b/598afa83bd9642cd9e9a58bb0a1d6726/FLAG56e722581 [2020-09-16 01:11:10,573 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97b7c2f5b/598afa83bd9642cd9e9a58bb0a1d6726 [2020-09-16 01:11:10,590 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-16 01:11:10,600 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-16 01:11:10,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-16 01:11:10,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-16 01:11:10,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-16 01:11:10,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 01:11:10" (1/1) ... [2020-09-16 01:11:10,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14382dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:10, skipping insertion in model container [2020-09-16 01:11:10,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 01:11:10" (1/1) ... [2020-09-16 01:11:10,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-16 01:11:10,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-16 01:11:11,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 01:11:11,247 INFO L203 MainTranslator]: Completed pre-run [2020-09-16 01:11:11,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 01:11:11,437 INFO L208 MainTranslator]: Completed translation [2020-09-16 01:11:11,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:11 WrapperNode [2020-09-16 01:11:11,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-16 01:11:11,440 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-16 01:11:11,440 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-16 01:11:11,440 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-16 01:11:11,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:11" (1/1) ... [2020-09-16 01:11:11,474 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:11" (1/1) ... [2020-09-16 01:11:11,498 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-16 01:11:11,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-16 01:11:11,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-16 01:11:11,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-16 01:11:11,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:11" (1/1) ... [2020-09-16 01:11:11,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:11" (1/1) ... [2020-09-16 01:11:11,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:11" (1/1) ... [2020-09-16 01:11:11,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:11" (1/1) ... [2020-09-16 01:11:11,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:11" (1/1) ... [2020-09-16 01:11:11,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:11" (1/1) ... [2020-09-16 01:11:11,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:11" (1/1) ... [2020-09-16 01:11:11,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-16 01:11:11,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-16 01:11:11,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-16 01:11:11,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-16 01:11:11,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 01:11:11,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-16 01:11:11,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-16 01:11:11,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-16 01:11:11,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-16 01:11:11,633 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-16 01:11:11,633 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-16 01:11:11,633 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-16 01:11:11,633 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-16 01:11:11,633 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-16 01:11:11,634 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-16 01:11:11,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-16 01:11:11,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-16 01:11:11,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-16 01:11:11,636 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-16 01:11:12,049 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-16 01:11:12,049 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-16 01:11:12,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 01:11:12 BoogieIcfgContainer [2020-09-16 01:11:12,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-16 01:11:12,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-16 01:11:12,058 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-16 01:11:12,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-16 01:11:12,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 01:11:10" (1/3) ... [2020-09-16 01:11:12,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6832a48e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 01:11:12, skipping insertion in model container [2020-09-16 01:11:12,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:11" (2/3) ... [2020-09-16 01:11:12,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6832a48e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 01:11:12, skipping insertion in model container [2020-09-16 01:11:12,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 01:11:12" (3/3) ... [2020-09-16 01:11:12,069 INFO L109 eAbstractionObserver]: Analyzing ICFG safe035_pso.oepc.i [2020-09-16 01:11:12,080 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-16 01:11:12,081 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-16 01:11:12,090 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-16 01:11:12,092 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-16 01:11:12,122 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:12,123 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:12,123 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:12,123 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:12,124 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:12,124 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:12,125 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:12,125 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:12,125 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:12,126 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:12,126 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:12,126 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:12,127 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:12,127 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:12,127 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:12,127 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:12,128 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:12,128 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:12,133 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:12,133 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:12,134 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:12,134 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:12,142 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:12,142 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:12,142 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:12,143 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:12,153 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:12,153 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:12,153 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:12,154 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:12,181 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-16 01:11:12,213 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 01:11:12,213 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 01:11:12,214 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-16 01:11:12,214 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-16 01:11:12,214 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 01:11:12,214 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 01:11:12,214 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 01:11:12,215 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 01:11:12,234 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-16 01:11:12,236 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-16 01:11:12,294 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-16 01:11:12,295 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 01:11:12,301 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-16 01:11:12,304 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-16 01:11:12,325 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-16 01:11:12,325 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 01:11:12,326 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-16 01:11:12,328 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-16 01:11:12,330 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-16 01:11:13,672 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-09-16 01:11:13,919 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2414 [2020-09-16 01:11:13,920 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-09-16 01:11:13,924 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-09-16 01:11:13,952 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-16 01:11:13,955 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-16 01:11:13,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-16 01:11:13,965 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:11:13,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:11:13,966 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:11:13,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:11:13,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1626757645, now seen corresponding path program 1 times [2020-09-16 01:11:13,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:11:13,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130104027] [2020-09-16 01:11:13,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:11:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:11:14,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:11:14,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130104027] [2020-09-16 01:11:14,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:11:14,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-16 01:11:14,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2033823553] [2020-09-16 01:11:14,272 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:11:14,276 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:11:14,294 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-16 01:11:14,294 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:11:14,297 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:11:14,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 01:11:14,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:11:14,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 01:11:14,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 01:11:14,318 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-16 01:11:14,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:11:14,381 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-09-16 01:11:14,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 01:11:14,384 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-16 01:11:14,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:11:14,403 INFO L225 Difference]: With dead ends: 294 [2020-09-16 01:11:14,403 INFO L226 Difference]: Without dead ends: 230 [2020-09-16 01:11:14,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 01:11:14,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-09-16 01:11:14,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-09-16 01:11:14,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-09-16 01:11:14,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-09-16 01:11:14,503 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-09-16 01:11:14,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:11:14,505 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-09-16 01:11:14,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 01:11:14,505 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-09-16 01:11:14,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-16 01:11:14,509 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:11:14,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:11:14,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-16 01:11:14,510 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:11:14,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:11:14,510 INFO L82 PathProgramCache]: Analyzing trace with hash 113122264, now seen corresponding path program 1 times [2020-09-16 01:11:14,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:11:14,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705956132] [2020-09-16 01:11:14,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:11:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:11:14,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:11:14,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705956132] [2020-09-16 01:11:14,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:11:14,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-16 01:11:14,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2138644780] [2020-09-16 01:11:14,607 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:11:14,608 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:11:14,611 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-09-16 01:11:14,611 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:11:14,664 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:11:14,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 01:11:14,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:11:14,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 01:11:14,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 01:11:14,667 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-09-16 01:11:14,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:11:14,676 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-09-16 01:11:14,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 01:11:14,676 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-16 01:11:14,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:11:14,679 INFO L225 Difference]: With dead ends: 202 [2020-09-16 01:11:14,679 INFO L226 Difference]: Without dead ends: 202 [2020-09-16 01:11:14,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 01:11:14,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-16 01:11:14,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-16 01:11:14,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-16 01:11:14,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-09-16 01:11:14,698 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-09-16 01:11:14,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:11:14,699 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-09-16 01:11:14,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 01:11:14,699 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-09-16 01:11:14,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-16 01:11:14,701 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:11:14,701 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:11:14,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-16 01:11:14,701 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:11:14,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:11:14,702 INFO L82 PathProgramCache]: Analyzing trace with hash -54559497, now seen corresponding path program 1 times [2020-09-16 01:11:14,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:11:14,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261161997] [2020-09-16 01:11:14,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:11:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:11:14,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:11:14,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261161997] [2020-09-16 01:11:14,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:11:14,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 01:11:14,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1843058261] [2020-09-16 01:11:14,767 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:11:14,768 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:11:14,770 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-09-16 01:11:14,770 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:11:14,773 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:11:14,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 01:11:14,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:11:14,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 01:11:14,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 01:11:14,775 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-09-16 01:11:14,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:11:14,796 INFO L93 Difference]: Finished difference Result 266 states and 704 transitions. [2020-09-16 01:11:14,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 01:11:14,796 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-16 01:11:14,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:11:14,798 INFO L225 Difference]: With dead ends: 266 [2020-09-16 01:11:14,799 INFO L226 Difference]: Without dead ends: 140 [2020-09-16 01:11:14,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 01:11:14,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-09-16 01:11:14,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-09-16 01:11:14,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-16 01:11:14,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 362 transitions. [2020-09-16 01:11:14,810 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 362 transitions. Word has length 10 [2020-09-16 01:11:14,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:11:14,810 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 362 transitions. [2020-09-16 01:11:14,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 01:11:14,810 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 362 transitions. [2020-09-16 01:11:14,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-16 01:11:14,812 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:11:14,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:11:14,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-16 01:11:14,812 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:11:14,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:11:14,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1691362226, now seen corresponding path program 1 times [2020-09-16 01:11:14,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:11:14,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914260922] [2020-09-16 01:11:14,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:11:14,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:11:14,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:11:14,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914260922] [2020-09-16 01:11:14,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:11:14,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 01:11:14,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1242717466] [2020-09-16 01:11:14,954 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:11:14,955 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:11:14,957 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-09-16 01:11:14,957 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:11:14,965 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:11:14,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 01:11:14,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:11:14,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 01:11:14,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 01:11:14,967 INFO L87 Difference]: Start difference. First operand 140 states and 362 transitions. Second operand 4 states. [2020-09-16 01:11:15,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:11:15,009 INFO L93 Difference]: Finished difference Result 165 states and 389 transitions. [2020-09-16 01:11:15,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 01:11:15,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-16 01:11:15,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:11:15,011 INFO L225 Difference]: With dead ends: 165 [2020-09-16 01:11:15,011 INFO L226 Difference]: Without dead ends: 113 [2020-09-16 01:11:15,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 01:11:15,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-09-16 01:11:15,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-09-16 01:11:15,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-16 01:11:15,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 257 transitions. [2020-09-16 01:11:15,020 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 257 transitions. Word has length 11 [2020-09-16 01:11:15,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:11:15,020 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 257 transitions. [2020-09-16 01:11:15,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 01:11:15,020 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 257 transitions. [2020-09-16 01:11:15,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-16 01:11:15,021 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:11:15,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:11:15,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-16 01:11:15,022 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:11:15,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:11:15,022 INFO L82 PathProgramCache]: Analyzing trace with hash -891715752, now seen corresponding path program 1 times [2020-09-16 01:11:15,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:11:15,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737449173] [2020-09-16 01:11:15,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:11:15,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:11:15,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:11:15,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737449173] [2020-09-16 01:11:15,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:11:15,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 01:11:15,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [554814544] [2020-09-16 01:11:15,106 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:11:15,108 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:11:15,112 INFO L274 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-09-16 01:11:15,112 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:11:15,131 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2995#(<= ~__unbuffered_cnt~0 0)] [2020-09-16 01:11:15,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-16 01:11:15,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:11:15,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-16 01:11:15,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-16 01:11:15,132 INFO L87 Difference]: Start difference. First operand 113 states and 257 transitions. Second operand 6 states. [2020-09-16 01:11:15,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:11:15,187 INFO L93 Difference]: Finished difference Result 111 states and 232 transitions. [2020-09-16 01:11:15,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-16 01:11:15,188 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-09-16 01:11:15,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:11:15,188 INFO L225 Difference]: With dead ends: 111 [2020-09-16 01:11:15,189 INFO L226 Difference]: Without dead ends: 80 [2020-09-16 01:11:15,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-16 01:11:15,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-16 01:11:15,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-09-16 01:11:15,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-16 01:11:15,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 159 transitions. [2020-09-16 01:11:15,194 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 159 transitions. Word has length 12 [2020-09-16 01:11:15,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:11:15,194 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 159 transitions. [2020-09-16 01:11:15,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-16 01:11:15,195 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 159 transitions. [2020-09-16 01:11:15,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-16 01:11:15,196 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:11:15,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:11:15,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-16 01:11:15,197 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:11:15,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:11:15,197 INFO L82 PathProgramCache]: Analyzing trace with hash 2053094164, now seen corresponding path program 1 times [2020-09-16 01:11:15,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:11:15,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029647761] [2020-09-16 01:11:15,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:11:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:11:15,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:11:15,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029647761] [2020-09-16 01:11:15,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:11:15,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-16 01:11:15,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [482072392] [2020-09-16 01:11:15,319 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:11:15,321 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:11:15,324 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 36 transitions. [2020-09-16 01:11:15,324 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:11:15,348 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3275#(<= ~__unbuffered_cnt~0 0)] [2020-09-16 01:11:15,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-16 01:11:15,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:11:15,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-16 01:11:15,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-16 01:11:15,349 INFO L87 Difference]: Start difference. First operand 80 states and 159 transitions. Second operand 7 states. [2020-09-16 01:11:15,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:11:15,423 INFO L93 Difference]: Finished difference Result 75 states and 147 transitions. [2020-09-16 01:11:15,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 01:11:15,424 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-09-16 01:11:15,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:11:15,424 INFO L225 Difference]: With dead ends: 75 [2020-09-16 01:11:15,425 INFO L226 Difference]: Without dead ends: 66 [2020-09-16 01:11:15,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-16 01:11:15,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-16 01:11:15,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-16 01:11:15,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-16 01:11:15,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 131 transitions. [2020-09-16 01:11:15,437 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 131 transitions. Word has length 14 [2020-09-16 01:11:15,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:11:15,438 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 131 transitions. [2020-09-16 01:11:15,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-16 01:11:15,438 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 131 transitions. [2020-09-16 01:11:15,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-16 01:11:15,442 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:11:15,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:11:15,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-16 01:11:15,443 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:11:15,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:11:15,443 INFO L82 PathProgramCache]: Analyzing trace with hash -913032564, now seen corresponding path program 1 times [2020-09-16 01:11:15,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:11:15,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930716896] [2020-09-16 01:11:15,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:11:15,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:11:15,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:11:15,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930716896] [2020-09-16 01:11:15,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:11:15,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 01:11:15,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [711030167] [2020-09-16 01:11:15,513 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:11:15,514 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:11:15,522 INFO L274 McrAutomatonBuilder]: Finished intersection with 40 states and 57 transitions. [2020-09-16 01:11:15,522 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:11:15,544 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:11:15,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 01:11:15,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:11:15,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 01:11:15,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 01:11:15,545 INFO L87 Difference]: Start difference. First operand 66 states and 131 transitions. Second operand 4 states. [2020-09-16 01:11:15,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:11:15,567 INFO L93 Difference]: Finished difference Result 85 states and 165 transitions. [2020-09-16 01:11:15,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 01:11:15,568 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-16 01:11:15,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:11:15,569 INFO L225 Difference]: With dead ends: 85 [2020-09-16 01:11:15,569 INFO L226 Difference]: Without dead ends: 48 [2020-09-16 01:11:15,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 01:11:15,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-16 01:11:15,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-16 01:11:15,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-16 01:11:15,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 83 transitions. [2020-09-16 01:11:15,572 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 83 transitions. Word has length 17 [2020-09-16 01:11:15,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:11:15,572 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 83 transitions. [2020-09-16 01:11:15,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 01:11:15,573 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 83 transitions. [2020-09-16 01:11:15,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-16 01:11:15,574 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:11:15,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:11:15,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-16 01:11:15,574 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:11:15,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:11:15,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1376526520, now seen corresponding path program 2 times [2020-09-16 01:11:15,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:11:15,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256193224] [2020-09-16 01:11:15,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:11:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:11:15,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:11:15,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256193224] [2020-09-16 01:11:15,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:11:15,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 01:11:15,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [288492027] [2020-09-16 01:11:15,630 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:11:15,632 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:11:15,638 INFO L274 McrAutomatonBuilder]: Finished intersection with 38 states and 57 transitions. [2020-09-16 01:11:15,639 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:11:15,654 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:11:15,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 01:11:15,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:11:15,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 01:11:15,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 01:11:15,656 INFO L87 Difference]: Start difference. First operand 48 states and 83 transitions. Second operand 4 states. [2020-09-16 01:11:15,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:11:15,676 INFO L93 Difference]: Finished difference Result 73 states and 130 transitions. [2020-09-16 01:11:15,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 01:11:15,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-16 01:11:15,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:11:15,677 INFO L225 Difference]: With dead ends: 73 [2020-09-16 01:11:15,677 INFO L226 Difference]: Without dead ends: 42 [2020-09-16 01:11:15,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 01:11:15,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-16 01:11:15,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-16 01:11:15,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-16 01:11:15,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 71 transitions. [2020-09-16 01:11:15,680 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 71 transitions. Word has length 17 [2020-09-16 01:11:15,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:11:15,680 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 71 transitions. [2020-09-16 01:11:15,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 01:11:15,680 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 71 transitions. [2020-09-16 01:11:15,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-16 01:11:15,681 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:11:15,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:11:15,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-16 01:11:15,682 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:11:15,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:11:15,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1323635892, now seen corresponding path program 3 times [2020-09-16 01:11:15,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:11:15,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598603714] [2020-09-16 01:11:15,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:11:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:11:15,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:11:15,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598603714] [2020-09-16 01:11:15,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:11:15,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 01:11:15,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1344266229] [2020-09-16 01:11:15,737 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:11:15,739 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:11:15,744 INFO L274 McrAutomatonBuilder]: Finished intersection with 30 states and 39 transitions. [2020-09-16 01:11:15,744 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:11:15,770 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:11:15,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 01:11:15,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:11:15,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 01:11:15,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 01:11:15,771 INFO L87 Difference]: Start difference. First operand 42 states and 71 transitions. Second operand 4 states. [2020-09-16 01:11:15,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:11:15,803 INFO L93 Difference]: Finished difference Result 41 states and 70 transitions. [2020-09-16 01:11:15,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 01:11:15,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-16 01:11:15,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:11:15,804 INFO L225 Difference]: With dead ends: 41 [2020-09-16 01:11:15,804 INFO L226 Difference]: Without dead ends: 0 [2020-09-16 01:11:15,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 01:11:15,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-16 01:11:15,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-16 01:11:15,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-16 01:11:15,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-16 01:11:15,806 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-16 01:11:15,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:11:15,806 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-16 01:11:15,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 01:11:15,806 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-16 01:11:15,807 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-16 01:11:15,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-16 01:11:15,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 01:11:15 BasicIcfg [2020-09-16 01:11:15,812 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-16 01:11:15,815 INFO L168 Benchmark]: Toolchain (without parser) took 5222.54 ms. Allocated memory was 145.2 MB in the beginning and 252.2 MB in the end (delta: 107.0 MB). Free memory was 99.9 MB in the beginning and 148.0 MB in the end (delta: -48.1 MB). Peak memory consumption was 58.9 MB. Max. memory is 7.1 GB. [2020-09-16 01:11:15,816 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 145.2 MB. Free memory was 119.8 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-16 01:11:15,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 838.05 ms. Allocated memory was 145.2 MB in the beginning and 201.3 MB in the end (delta: 56.1 MB). Free memory was 99.3 MB in the beginning and 158.4 MB in the end (delta: -59.1 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-09-16 01:11:15,818 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.83 ms. Allocated memory is still 201.3 MB. Free memory was 158.4 MB in the beginning and 156.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-16 01:11:15,823 INFO L168 Benchmark]: Boogie Preprocessor took 31.16 ms. Allocated memory is still 201.3 MB. Free memory was 156.3 MB in the beginning and 155.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-16 01:11:15,824 INFO L168 Benchmark]: RCFGBuilder took 524.75 ms. Allocated memory is still 201.3 MB. Free memory was 155.0 MB in the beginning and 132.9 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-09-16 01:11:15,825 INFO L168 Benchmark]: TraceAbstraction took 3755.02 ms. Allocated memory was 201.3 MB in the beginning and 252.2 MB in the end (delta: 50.9 MB). Free memory was 132.2 MB in the beginning and 148.0 MB in the end (delta: -15.8 MB). Peak memory consumption was 35.0 MB. Max. memory is 7.1 GB. [2020-09-16 01:11:15,838 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 145.2 MB. Free memory was 119.8 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 838.05 ms. Allocated memory was 145.2 MB in the beginning and 201.3 MB in the end (delta: 56.1 MB). Free memory was 99.3 MB in the beginning and 158.4 MB in the end (delta: -59.1 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.83 ms. Allocated memory is still 201.3 MB. Free memory was 158.4 MB in the beginning and 156.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.16 ms. Allocated memory is still 201.3 MB. Free memory was 156.3 MB in the beginning and 155.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 524.75 ms. Allocated memory is still 201.3 MB. Free memory was 155.0 MB in the beginning and 132.9 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3755.02 ms. Allocated memory was 201.3 MB in the beginning and 252.2 MB in the end (delta: 50.9 MB). Free memory was 132.2 MB in the beginning and 148.0 MB in the end (delta: -15.8 MB). Peak memory consumption was 35.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 626 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2414 CheckedPairsTotal, 56 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 172 SDtfs, 121 SDslu, 225 SDs, 0 SdLazy, 130 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 3412 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...